src/core/identserver.h

   1 /***************************************************************************
   2  *   Copyright (C) 2005-2022 by the Quassel Project                        *
   3  *   devel@quassel-irc.org                                                 *
   4  *                                                                         *
   5  *   This program is free software; you can redistribute it and/or modify  *
   6  *   it under the terms of the GNU General Public License as published by  *
   7  *   the Free Software Foundation; either version 2 of the License, or     *
   8  *   (at your option) version 3.                                           *
   9  *                                                                         *
  10  *   This program is distributed in the hope that it will be useful,       *
  11  *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
  12  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
  13  *   GNU General Public License for more details.                          *
  14  *                                                                         *
  15  *   You should have received a copy of the GNU General Public License     *
  16  *   along with this program; if not, write to the                         *
  17  *   Free Software Foundation, Inc.,                                       *
  18  *   51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.         *
  19  ***************************************************************************/
  20
  21 #pragma once
  22
  23 #include <list>
  24
  25 #include <QHash>
  26 #include <QObject>
  27 #include <QPointer>
  28 #include <QString>
  29 #include <QTcpServer>
  30 #include <QTcpSocket>
  31
  32 #include "coreidentity.h"
  33
  34 struct Request
  35 {
  36     QPointer<QTcpSocket> socket;
  37     uint16_t localPort;
  38     uint16_t remotePort;
  39     QString query;
  40     qint64 transactionId;
  41     qint64 requestId;
  42
  43     friend bool operator==(const Request& a, const Request& b);
  44
  45     void respondSuccess(const QString& user);
  46     void respondError(const QString& error);
  47
  48     const static int DISCONNECTION_TIMEOUT = 500;
  49 };
  50
  51 class IdentServer : public QObject
  52 {
  53     Q_OBJECT
  54
  55 public:
  56     IdentServer(QObject* parent = nullptr);
  57
  58     bool startListening();
  59     void stopListening(const QString& msg);
  60     qint64 addWaitingSocket();
  61
  62 public slots:
  63     void addSocket(const CoreIdentity* identity,
  64                    const QHostAddress& localAddress,
  65                    quint16 localPort,
  66                    const QHostAddress& peerAddress,
  67                    quint16 peerPort,
  68                    qint64 socketId);
  69     void removeSocket(const CoreIdentity* identity,
  70                       const QHostAddress& localAddress,
  71                       quint16 localPort,
  72                       const QHostAddress& peerAddress,
  73                       quint16 peerPort,
  74                       qint64 socketId);
  75
  76 private slots:
  77     void incomingConnection();
  78     void respond();
  79
  80 private:
  81     bool responseAvailable(Request request) const;
  82
  83     qint64 lowestSocketId() const;
  84
  85     void processWaiting(qint64 socketId);
  86
  87     void removeWaitingSocket(qint64 socketId);
  88
  89     QTcpServer _server, _v6server;
  90
  91     QHash<uint16_t, QString> _connections;
  92     std::list<Request> _requestQueue;
  93     std::list<qint64> _waiting;
  94     qint64 _socketId{0};
  95     qint64 _requestId{0};
  96 };